File photo of protests against the December 16 gang-rape in Delhi
As he recalls the attack that killed his best friend and left him grievously wounded, the young IT operator still can't fathom the depravity they encountered on a moving bus.
"For me, I lost a friend... The guilt will always remain," said the 28-year-old about the fatal gang rape of the young medical student on December 16, an attack that lacerated India and forced massive street protests culminating in new laws to punish sexual offences.
"She was cool, funny, mischievous had a great presence of mind. She could make anyone smile and maybe that is the reason why every Indian was angry and sad when she died," he said.
He had visited his friend twice at a Delhi hospital before she was airlifted to Singapore by the Indian government for further treatment.
"She was in enormous pain but wanted to talk to me and her family. She would recall the incident and get very angry... We would quickly change the subject."
He was the first of up to 80 witnesses to reveal before the court what he had experienced and seen on December 16.
The pair had spent the Sunday evening watching 'Life of Pi' and were trying to flag down an autorickshaw when a bus pulled up.
It was only after boarding that they realised it was no ordinary bus and that their fellow passengers were in fact a group of drunken joyriders.
Nearly unconscious after being savagely beaten, he could do nothing but watch as his friend was repeatedly raped and then violated with an iron rod.
The victim's intestinal injuries were so horrific that she died two weeks later.
Severe injuries left him unable to attend his friend's funeral. The accused had broken his leg, stripped him and kicked him out of a moving bus along with the victim.
Sometimes he goes to the cinema alone but his friend's fate is never far from his mind. "Sometimes I think about my friend, sometimes about the rapists. It sends shivers down my spine."